Poly Chain® GT™ Carbon™ Idler Sprocket

Scraped SKU: 7720-000000-000035 Series: Poly Chain® GT™ Carbon™ Idler Sprocket 2026-06-21 14:02:27

Attributes

Part Number7720-000000-000035

Description

# Poly Chain® GT™ Carbon™ Idler Sprocket Idlers are used to take-up extra belt length and provide adjustment for tensioning belt drives. Idler pulleys and sprockets can alter belt paths and clear obstructions. - Idler assembly may consist of: idler sprocket and bracket, flat idler and bracket, standard sheave or sprocket used with an idler bearing and idler bracket. - Idler sprockets, flat idlers and idler bushings contain sealed ball bearings and an integral shaft for mounting to adjustable idler brackets. - Lubrication and maintenance are not required.

Variations (9)

12-IDL-SPRK

Bearing No.6304
Belt Width (in)0.47
Belt Width (mm)12
F Threads (in)3/4 - 16
Number of Teeth32
Thread Size3/4-16
B (in)1.25
C (in)0.5
D (in)0.85
E (in)1.56
G (in)0.94
H (in)2.75
Width (mm)12
Markets/ApplicationsRecommended for drives with limited take-up or no center distance adjustment. Idlers may remain in a fixed location or may be adjustable to allow belt pre-tension take-up.
Customer Pack1
Weight (lbs.)3.8

125-IDL-SPRK

Bearing No.6310
Belt Width (in)4.92
Belt Width (mm)125
F Threads (in)1 - 14
Number of Teeth34
Thread Size1-14
B (in)3.38
C (in)0.19
D (in)5.63
E (in)2.25
G (in)1.09
H (in)4.88
J (in)4.34
Width (mm)125
Markets/ApplicationsRecommended for drives with limited take-up or no center distance adjustment. Idlers may remain in a fixed location or may be adjustable to allow belt pre-tension take-up.
Customer Pack1
Weight (lbs.)36.45

20-IDL-SPRK

Bearing No.6308
Belt Width (in)0.78
Belt Width (mm)20
F Threads (in)1 - 14
Number of Teeth30
Thread Size1-14
B (in)2.55
C (in)1
D (in)1.36
E (in)2.25
G (in)1
H (in)4.38
Width (mm)20
Markets/ApplicationsRecommended for drives with limited take-up or no center distance adjustment. Idlers may remain in a fixed location or may be adjustable to allow belt pre-tension take-up.
Customer Pack1
Weight (lbs.)12.55

21-IDL-SPRK

Bearing No.6304
Belt Width (in)0.83
Belt Width (mm)21
F Threads (in)3/4 - 16
Number of Teeth32
Thread Size3/4-16
B (in)1.25
C (in)0.5
D (in)1.24
E (in)1.56
G (in)0.56
H (in)2.75
Width (mm)21
Markets/ApplicationsRecommended for drives with limited take-up or no center distance adjustment. Idlers may remain in a fixed location or may be adjustable to allow belt pre-tension take-up.
Customer Pack1
Weight (lbs.)3.88

36-IDL-SPRK

Bearing No.6306
Belt Width (in)1.42
Belt Width (mm)36
F Threads (in)3/4 - 16
Number of Teeth36
Thread Size3/4-16
B (in)1.91
C (in)0.75
D (in)1.86
E (in)1.63
Width (mm)36
Markets/ApplicationsRecommended for drives with limited take-up or no center distance adjustment. Idlers may remain in a fixed location or may be adjustable to allow belt pre-tension take-up.
Customer Pack1
Weight (lbs.)5.14

37-IDL-SPRK

Bearing No.6308
Belt Width (in)1.46
Belt Width (mm)37
F Threads (in)1 - 14
Number of Teeth30
Thread Size1-14
B (in)2.55
C (in)1
D (in)2.06
E (in)2.25
G (in)0.25
H (in)4.38
Width (mm)37
Markets/ApplicationsRecommended for drives with limited take-up or no center distance adjustment. Idlers may remain in a fixed location or may be adjustable to allow belt pre-tension take-up.
Customer Pack1
Weight (lbs.)13.46

62-IDL-SPRK

Bearing No.6306
Belt Width (in)2.44
Belt Width (mm)62
F Threads (in)3/4 - 16
Number of Teeth36
Thread Size3/4-16
B (in)1.91
C (in)0.75
D (in)2.91
E (in)1.63
G (in)0.69
H (in)3.13
Width (mm)62
Markets/ApplicationsRecommended for drives with limited take-up or no center distance adjustment. Idlers may remain in a fixed location or may be adjustable to allow belt pre-tension take-up.
Customer Pack1
Weight (lbs.)9.69

68-IDL-SPRK

Bearing No.6310
Belt Width (in)2.67
Belt Width (mm)68
F Threads (in)1 - 14
Number of Teeth34
Thread Size1-14
B (in)3.38
C (in)0.56
D (in)3.33
E (in)2.25
G (in)1
H (in)4.88
J (in)4.34
Width (mm)68
Markets/ApplicationsRecommended for drives with limited take-up or no center distance adjustment. Idlers may remain in a fixed location or may be adjustable to allow belt pre-tension take-up.
Customer Pack1
Weight (lbs.)26.03

90-IDL-SPRK

Bearing No.6310
Belt Width (in)3.54
Belt Width (mm)90
F Threads (in)1 - 14
Number of Teeth34
Thread Size1-14
B (in)3.38
C (in)0.31
D (in)4.2
E (in)2.25
G (in)1
H (in)4.88
J (in)4.34
Width (mm)90
Markets/ApplicationsRecommended for drives with limited take-up or no center distance adjustment. Idlers may remain in a fixed location or may be adjustable to allow belt pre-tension take-up.
Customer Pack1
Weight (lbs.)32.18

Specifications

Bearing No.6304 – 6310
Belt Width (in)0.47 – 4.92
Belt Width (mm)12 – 125
F Threads (in)3/4 - 16, 1 - 14
Number of Teeth30 – 36
Thread Size3/4-16, 1-14
B (in)1.25 – 3.38
C (in)0.19 – 1
D (in)0.85 – 5.63
E (in)1.56 – 2.25
G (in)0.25 – 1.09
H (in)2.75 – 4.88
Width (mm)12 – 125
Markets/ApplicationsRecommended for drives with limited take-up or no center distance adjustment. Idlers may remain in a fixed location or may be adjustable to allow belt pre-tension take-up.
Customer Pack1
Weight (lbs.)3.8 – 36.45
J (in)4.34

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